| タイトル | High speed rotorcraft propulsion concepts to control power/speed characteristics |
| 著者（英） | Blandford, C. S.; Hawkins, J. M.; Bettner, J. L. |
| 著者所属（英） | NASA Ames Research Center |
| 発行日 | 1992-07-01 |
| 言語 | eng |
| 内容記述 | Recent NASA sponsored rotorcraft airframer studies have demonstrated the desire for constant power over a wide range of output speed for turboshaft propulsion systems. This study interrogated several different concepts aimed at maintaining constant power over a speed variation from 100-50 percent with minimum increase in fuel consumption. The baseline engine was an advanced technology 8000 shp, fixed turbine geometry, turboshaft engine. The concepts investigated included variable geometry turbines, variable geometry compressors, power transfer from the HP to LP shafts, counterrotating power turbine with a combiner gearbox, and variable speed transmission integrated with the baseline turboshaft engine. The concept that best satisfies the program objectives with superior engine performance and with the least technical risk is the baseline (fixed geometry turbines) turboshaft engine integrated with the variable speed transmission. |
| NASA分類 | AIRCRAFT PROPULSION AND POWER |
| レポートNO | 92A48940
AIAA PAPER 92-3367 |
| 権利 | Copyright |
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